A kind of catalytic cracking catalyst containing nay molecular sieve composite material and preparation method thereof
A composite material, catalytic cracking technology, applied in molecular sieve catalysts, catalytic cracking, physical/chemical process catalysts, etc., can solve the problems of increased cost, small increase in silicon-aluminum ratio, and insufficient abundance.
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Embodiment 1
[0041] The directing agent is prepared by mixing 1.54kg of water glass and 0.945kg of peralkaline sodium metaaluminate and standing at 35°C for 15h. A part of kaolin was roasted at 940°C for 2.4 hours to obtain high soil, and the other part was roasted at 800°C for 2.8 hours to obtain partial soil. Mix 2 kg of partial soil with 3.65 kg of hydrochloric acid solution with a concentration of 20% by weight and stir at 92°C. 2 hours; mix 2kg of high soil and 4.6kg of lye evenly, stir at 90°C for 2.5 hours, then add 1.4kg of directing agent and 0.7kg of lye in turn, after crystallization at 92°C for 4 hours, add the treated partial earth solution to continue Crystallize for 20 hours, filter, wash with water, and dry to obtain a NaY molecular sieve composite material. The crystallinity of NaY molecular sieve in the composite material was measured by X-ray diffraction method to be 68%, SiO 2 / Al 2 o 3 5.78, specific surface 609m 2 / g, total pore volume 0.44m 3 / g, medium and larg...
Embodiment 2
[0044] The directing agent is prepared by mixing 0.624kg of water glass and 0.416kg of peralkaline sodium metaaluminate, and standing at 33°C for 20h. A part of kaolin was roasted at 970° C. for 1.5 hours to obtain high soil, and the other part was roasted at 830° C. for 2 hours to obtain partial soil. 2.5 kg of partial soil and 4.3 kg of sulfuric acid solution with a concentration of 18% by weight were mixed uniformly and heated at 94° C. Stir for 1 hour; mix 1.5kg of high soil and 4.2kg of lye evenly, stir at 93°C for 1.2 hours, then add 0.8kg of directing agent and 1.0kg of lye in turn, after crystallization at 93°C for 6 hours, add the treated partial soil The solution continued to crystallize for 28 hours, filtered, washed with water, and dried to obtain a NaY molecular sieve composite material. The crystallinity of NaY molecular sieve in the composite material was measured by X-ray diffraction method to be 70%, SiO 2 / Al 2 o 3 5.67, specific surface 623m 2 / g, total ...
Embodiment 3
[0047] The directing agent is prepared by mixing 1.53kg water glass and 0.98kg peralkaline sodium metaaluminate, and standing at 34°C for 32h. A part of kaolin was roasted at 950°C for 2 hours to obtain high soil, and the other part was roasted at 900°C for 1.5 hours to obtain partial soil. Mix 1.0kg of partial soil with 2.65g of nitric acid solution with a concentration of 22% by weight, and heat the mixture at 92.5°C. Stir for 3 hours; mix 3.0kg of high soil and 4.55g of lye evenly, stir at 95°C for 6 hours, then add 1kg of directing agent and 0.85kg of lye in turn, crystallize at 92°C for 5 hours, then add the treated partial earth solution Continue to crystallize for 18 hours, filter, wash with water, and dry to obtain a NaY molecular sieve composite material. The crystallinity of NaY molecular sieve in the composite material was measured by X-ray diffraction method to be 66%, SiO 2 / Al 2 o 3 5.81, specific surface 607m 2 / g, total pore volume 0.46m 3 / g, medium and l...
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